Backstory: Whenever I watch a cooking show I think "ooh, I want that, how can I make it?" It often involves a lot of googling and I give up and order some Pizza :)
The Idea: Shazam for cooking shows.
Deep Dive: Similar to Shazam for music, you would build a mobile app that would use voice recognition to identify the cooking show and give you the recipe. Additionally you could find a restaurant that makes something similar and offer to have it delivered for a fee.
Validation: We're slowly replacing the "just google it" phase whenever possible. This would give users an instant gratification as well prove useful.
Monetization: You would have ads when people are using the app and take a cut of the fee when someone orders the food for delivery.